feat(admin-dashboard): add rank coverage meta for merchant revenue top5

app/Http/Controllers/Admin/DashboardController.php

@@ -227,10 +227,12 @@ class DashboardController extends Controller
         $planIdToName = Plan::query()->pluck('name', 'id')->all();
 
         // 排行卡（最小可用）：近 7 天站点收入排行 Top5（按已付金额）
+        // 说明：只统计 payment_status=paid，避免“未支付订单=0金额”混入排行造成噪音。
         $merchantRevenueRank7d = PlatformOrder::query()
             ->selectRaw('merchant_id, COUNT(*) as cnt')
-            ->selectRaw("SUM(CASE WHEN payment_status = 'paid' THEN paid_amount ELSE 0 END) as paid_sum")
+            ->selectRaw('SUM(paid_amount) as paid_sum')
             ->whereBetween('created_at', [$trendStart, $trendEnd])
+            ->where('payment_status', 'paid')
             ->groupBy('merchant_id')
             ->orderByDesc('paid_sum')
             ->limit(5)
@@ -245,6 +247,17 @@ class DashboardController extends Controller
             ->values()
             ->all();
 
+        // 用于计算“Top5覆盖率/其它”的全量分母（近 7 天全站点已付总额/总订单数）
+        $merchantRevenueTotalPaid7d = (float) PlatformOrder::query()
+            ->whereBetween('created_at', [$trendStart, $trendEnd])
+            ->where('payment_status', 'paid')
+            ->sum('paid_amount');
+
+        $merchantRevenueTotalOrders7d = (int) PlatformOrder::query()
+            ->whereBetween('created_at', [$trendStart, $trendEnd])
+            ->where('payment_status', 'paid')
+            ->count();
+
         $merchantIdToName = Merchant::query()->pluck('name', 'id')->all();
 
         return view('admin.dashboard', [
@@ -256,6 +269,8 @@ class DashboardController extends Controller
             'planOrderShareTotal' => (int) $planOrderShareTotal,
             'planIdToName' => $planIdToName,
             'merchantRevenueRank7d' => $merchantRevenueRank7d,
+            'merchantRevenueTotalPaid7d' => (float) $merchantRevenueTotalPaid7d,
+            'merchantRevenueTotalOrders7d' => (int) $merchantRevenueTotalOrders7d,
             'merchantIdToName' => $merchantIdToName,
             'platformAdmin' => $admin,
             'cacheMeta' => [